fix: LoginPage checkbox methods fail with Radix UI checkboxes

The LoginPage used .check() and .uncheck() on the "Remember me" checkbox,
but these Playwright methods only work on native <input type="checkbox">
elements. The app uses @radix-ui/react-checkbox which renders as
<button role="checkbox">, causing tests to fail with:
"Error: Not a checkbox or radio input"

This prevented ALL e2e and visual tests from running, including the auth
tests that execute in CI.

Changed to use .setChecked() which works with both:
- Native <input type="checkbox"> elements
- ARIA checkboxes with role="checkbox" (Radix UI, MUI, etc.)

Changes:
- login(): Use setChecked(rememberMe) instead of conditional check()
- clearForm(): Use setChecked(false) instead of conditional uncheck()

The .isChecked() and .toBeChecked() assertions still work correctly
because they check the aria-checked attribute that Radix UI sets.

Author: claude

tests/pages/LoginPage.ts

@@ -43,9 +43,8 @@ export class LoginPage extends BasePage {
     await this.serverNameInput.fill(serverName);
     await this.bearerTokenInput.fill(token);
 
-    if (rememberMe) {
-      await this.rememberMeCheckbox.check();
-    }
+    // Use setChecked() for Radix UI checkbox (renders as button role="checkbox")
+    await this.rememberMeCheckbox.setChecked(rememberMe);
 
     await this.loginButton.click();
   }
@@ -73,9 +72,8 @@ export class LoginPage extends BasePage {
   async clearForm() {
     await this.serverNameInput.clear();
     await this.bearerTokenInput.clear();
-    if (await this.rememberMeCheckbox.isChecked()) {
-      await this.rememberMeCheckbox.uncheck();
-    }
+    // Use setChecked() for Radix UI checkbox (renders as button role="checkbox")
+    await this.rememberMeCheckbox.setChecked(false);
   }
 
   /**